Home / 78,177.24-117,173.52-28,231.02

Finding the Fourth Proportional to 78,177.24, 117,173.52 and 28,231.02

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Solution

The fourth proportional to 78,177.24, 117,173.52 and 28,231.02 is: 42,313.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,177.24 : 117,173.52 = 28,231.02 : x
  2. Step 2: Convert to fraction form
    78,177.24/117,173.52 = 28,231.02/x
  3. Step 3: Cross multiply
    78,177.24x = 117,173.52 × 28,231.02
  4. Step 4: Simplify right side
    78,177.24x = 3,307,927,986.59
  5. Step 5: Solve for x
    x = 3,307,927,986.59/78,177.24
  6. Step 6: Final answer
    x = 42,313.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.